KR20140140631A - Method and system for assessment of driver behaviour during driving of vehicles - Google Patents

Abstract

The invention relates to a method for evaluating driver behavior during driving of a vehicle, comprising the step (S1) of continuously characterizing the driver's selected braking process as a basis for evaluation and determining the cause of the selected braking process Step S2 and evaluating whether the selected braking process is an appropriate response to the cause (S3). The present invention also relates to a system for evaluating driver behavior during driving of a vehicle. The invention also relates to an automobile. The invention also relates to a computer program and a computer program product.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and system for evaluating driver behavior during driving of a vehicle,

The present invention relates to a method for evaluating driver behavior during driving of a vehicle, as described in the preamble of claim 1. The present invention relates to a system for evaluating driver behavior during driving of a vehicle, as described earlier in claim 8. The present invention also relates to an automobile. Additionally, the present invention relates to a computer program and a computer program product.

Certain vehicle manufacturers use driver support in the form of evaluating driver behavior during driving of vehicles, which can be used for various categories of evaluation (e.g., how the car drives from hillcrests) An anticipation category for evaluating the amount of time from the release of the accelerator to the braking, and, in the case of driving the vehicle, the hillcrest driving category, And a gearchange category for evaluating whether the correct gear is used. There is also a brake category that covers how the braking system is used, and to what extent the auxiliary brakes are used instead of service brakes / disc brakes to minimize wear.

Drivers are then ranked in these categories. The brake category is primarily concerned with wear, with very low wear, that is, wherever it is possible to use the auxiliary brakes as widely as possible, it gets a good rating. However, there is a problem in that the use of the auxiliary brake in certain circumstances, such as the engine brake actually decelerating along the itinerary of the vehicle, which may be sufficient to achieve the desired braking, results in unnecessary fuel consumption. Even in these situations, the driver gets a good rating in terms of fuel consumption, even though his driving was not optimal.

One object of the present invention is to provide a method for evaluating driver behavior during a braking process during driving of a vehicle for optimization of fuel consumption without affecting safety.

One object of the present invention is to provide a method for evaluating driver behavior during a braking process during driving of a vehicle for optimization of fuel consumption without affecting safety.

These and other objects, which are indicated by the description given below, are achieved by means of a method and system for the evaluation of driver behavior during the driving of vehicles, automobiles and computer programs and computer programs indicated at the beginning, 1 < / RTI > and < RTI ID = 0.0 > 8 < / RTI > Preferred embodiments of such methods and systems are defined in dependent claims 2 to 7 and 9 to 14.

The present invention achieves the objects in a method for evaluating driver behavior during driving of a vehicle, the method comprising continuously selecting the braking process of the driver as a basis for the evaluation, Determining a cause of the selected braking process, and evaluating whether or not it is an appropriate response to the determined cause. This enables a more accurate assessment of the driver's intentions in the braking process and enables evaluation of the driver's own behavior on both fuel consumption and traffic safety. Therefore, fuel consumption can be optimized while maintaining traffic safety. Thus encouraging traffic-safety and fuel-efficient driver behavior.

In one embodiment of the method, the braking process is characterized in terms of auxiliary brakes, service brakes and engine brakes. This enables the driver to determine which of the auxiliary brakes, service brakes and engine brakes should have been used, to what extent and when the driver himself / herself actually used them when evaluating driver behavior during the braking process, Thereby evaluating the driver's behavior.

In one embodiment of the method, determining the cause includes the use of a camera means, which allows the braking operation to identify that the braking operation has responded to the deceleration by detecting the speed indication, It becomes possible to facilitate the evaluation. The camera means also make it possible to identify any obstacles to the vehicle that are associated with each braking process, thereby making it possible to facilitate evaluation of driver behavior during the braking process.

In one embodiment of the method, determining the cause includes the use of map data and vehicle positioning means. This makes it possible to identify the position of the vehicle in each braking process, and it is possible to identify the position of the vehicle at any braking position, any speed change at each braking position, topography at the braking position, any bend at the braking position, To identify the exit / entry slip, thereby facilitating assessment of driver behavior in each braking process.

In one embodiment of the method, determining the cause comprises the use of a means for recording evasive maneuvers. This makes it easier for the driver to evaluate when it is possible to detect such a motion that requires the driver himself to follow a certain braking procedure involving the use of a service brake, Thereby facilitating evaluation of the driver's behavior.

 In one embodiment, the method further comprises continuously determining conditions under which the vehicle is operating, wherein the condition is considered in the evaluation. Such conditions include traffic conditions, time of day, weather, vehicle loads, vehicle speeds, types of roads (e.g., highways, national roads, etc.). Thus, evaluation of driver behavior during the braking process is facilitated, which allows a more accurate evaluation.

In one embodiment of the method, determining the cause includes using means for determining a road condition feature, such as a wet road surface, gravel road, etc., that may affect the braking process. Therefore, evaluation of the driver's behavior in the braking process becomes easy.

The invention also achieves the object as a system for evaluating driver behavior during driving of a vehicle, the system comprising means for continuously characterizing the driver ' s selected braking process as a basis for the evaluation, Means for determining the cause of the braking process, and means for evaluating whether or not it is an appropriate response to the determined cause. This enables a more accurate assessment of the driver's intentions in the braking process and enables evaluation of the driver's own behavior on both fuel consumption and traffic safety. Therefore, fuel consumption can be optimized while maintaining traffic safety. Thus encouraging traffic-safety and fuel-efficient driver behavior.

In one embodiment of the system, the braking process is characterized in terms of auxiliary brakes, service brakes and engine brakes. This enables the driver to determine which of the auxiliary brakes, service brakes and engine brakes should have been used, to what extent and when the driver himself / herself actually used them when evaluating driver behavior during the braking process, Thereby evaluating the driver's behavior.

In one embodiment of the system, the means for determining the cause includes the use of a camera means, which enables the braking operation to identify that the braking operation has responded to the deceleration by detecting the speed indication, It becomes possible to facilitate the evaluation. The camera means also make it possible to identify any obstacles to the vehicle that are associated with each braking process, thereby making it possible to facilitate evaluation of driver behavior during the braking process.

In one embodiment of the system, the means for determining the cause comprises a map information unit and vehicle positioning means. This makes it possible to identify the position of the vehicle in each braking process and to make it possible to detect any change in speed in each braking position, topography in the braking position, any bending in the braking position and any exit / Enabling the identification of slippage, which facilitates evaluation of driver behavior in each braking process.

System In one embodiment, the means for determining the cause comprises means for recording avoidance movements. This makes it easier for the driver to evaluate when it is possible to detect such a motion that requires the driver himself to follow a certain braking procedure involving the use of a service brake, Thereby facilitating evaluation.

In one embodiment, the system further comprises means for continuously determining the state in which the vehicle is operating, wherein the state is considered in the evaluation. Such conditions include traffic conditions, time of day, weather, vehicle loads, vehicle speeds, types of roads (e.g., highways, national roads, etc.). Thus, evaluation of driver behavior during the braking process is facilitated, which allows a more accurate evaluation.

In one embodiment of the system, the means for determining the cause includes means for determining road surface characteristics such as wet road surfaces, gravel roads and the like that may affect the braking process. Therefore, evaluation of the driver's behavior in the braking process becomes easy.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be better understood by reading the following detailed description, taken in conjunction with the accompanying drawings, in which like reference numerals are used to refer to like elements throughout the several views,
1 schematically shows a motor vehicle according to an embodiment of the present invention.
Figure 2 schematically illustrates a system for evaluating driver behavior during driving of a vehicle in accordance with an embodiment of the present invention,
3 is a schematic block diagram of a method according to an embodiment of the present invention, and
Figure 4 schematically shows a computer in accordance with an embodiment of the present invention.

As used herein, the term " link "may be a physical connection such as a photo-electronic communication line, or a communication that may be a non-physical connection such as a wireless connection (e.g. a radio link or a microwave link) Links say.

1 schematically shows an automobile 1 according to an embodiment of the present invention. The illustrated vehicle is a heavy vehicle in the form of a truck. It may alternatively be any suitable vehicle (e.g. bus or car). A vehicle according to the invention is provided in a vehicle.

2 is a schematic block diagram of a system I for assessment of driver behavior during driving of a vehicle in accordance with the present invention.

The system I includes an electronic control unit 100 for evaluation.

The system includes means (110) for determining the cause of the selected braking process.

The means (110) for determining the cause of the selected braking process comprises a camera means (112). Thus, a camera means for determining the cause of the selected braking process is provided in the system I. The camera means is configured to detect speed signs present in the itinerary of the vehicle to identify speed changes in accordance with the journey of the vehicle. The camera means may include other signs of a vehicle's journey, such as speed signs, as well as future obstacles related to vehicle motion (e.g., cyclists, road users, wild animals, fallen trees, etc.) And one detection to detect.

The means (110) for determining the cause of the selected braking process comprises a routing decision means (114). Thus, the itinerary determining means for determining the cause of the selected braking processes is provided in the system (I). The itinerary determination means is configured to provide predefined characteristics of the roadway according to the itinerary of the vehicle and the position of the vehicle accordingly.

The route determination unit 114 includes a map information unit 114a in one variation and the map information unit 114a is configured to determine the characteristics of the roadway (for example, the terrain at the braking position, And any exit / entrance slippage in braking and braking positions), which is intended to facilitate evaluation of driver behavior in each braking process.

The itinerary determination means 114 further comprises vehicle position determination means 114b in the form of a geolocation system, i.e., GPS, to identify the position of the vehicle in each braking process.

The itinerary determination means 114, i.e., the map information unit 114a and the vehicle position determination means 114b, are thus able to identify the position of the vehicle in each braking process and to identify any speed variation in each braking position .

Means (110) for determining the cause of the selected braking process includes avoiding motion recording means (116) for recording evasive maneuvers. Thus, evasive motion recording means is provided in the system I, which in one variation comprises a lateral acceleration sensor.

The means 110 for determining the cause of the selected braking process comprises means for determining the spacing between the vehicle and the preceding vehicle or equivalent vehicle and the space distance determining means for continuously determining the relative velocities between the vehicle and the preceding vehicle spacing distance determination means 118. The system I is therefore provided with a spatial distance determining means for accommodating the shape of the radar means and / or the laser measuring means in one variant. Therefore, the space distance determining means serves to supplement the camera means 112 for evaluation of the braking process.

The system I further includes driving state determination means 120 for determining the states in which the vehicle is operating. These conditions include, but are not limited to, traffic conditions, time associated with assessing whether or not each braking process was dark, weather (e.g., type of rainfall and precipitation) and external temperature, vehicle load, vehicle speed, , A highway or a national highway).

The driving state determining means 120 includes a traffic condition determining means 121 for determining a traffic state in each braking process in one modification. The traffic condition determining means includes communication means for integrating the radio units and / or the so-called wireless LAN or WLAN to determine the traffic situation in each braking process in one variant. The traffic condition determining means may be a sensor means mounted on the vehicle for monitoring obstacles to the vehicle in the vicinity of other vehicles and other road users (for example, cyclists or pedestrians) . The sensor may take the form of a camera means, a radar means and / or a laser measuring means.

The driving state determining means 120 further includes a time determining means 123 for determining the time at which each braking means is generated in one modification.

The driving state determination means 120 further includes a weather determination means 125 for determining a weather condition in each braking process in one variant. The weather determining means may comprise means for receiving weather information for receiving weather information via rain sensor means, radio or equivalent.

The driving state determining means 120 further includes a speed determining means 127 for determining the vehicle speed in each braking process in one modification. The speed determining means comprises a speedometer means in one variant.

The driving state determination means 120 further includes a road type determination means 129 for determining the type of road in each braking process in one variant, Unit 114a via map data. This makes it easier to evaluate driver behavior during the braking process and enables more accurate evaluation.

Means (110) for determining the cause of the selected braking process further comprises means (119) for determining road state characteristics for determining road state characteristics. The means for determining the road state characteristics are thus provided to the system (I). Road state characteristics include running surfaces such as wet road surfaces, gravel roads, etc. that may affect the braking process. Therefore, evaluation of the driver's behavior in the braking process becomes easy. The means for determining the road state characteristics may comprise any suitable means for determining road conditions, for example, friction sensor means, temperature means for determining ambient and / or road temperatures, and the like.

System I further includes braking process determination means 130 for determining vehicle braking processes.

The braking process determining means 130 determines whether or not there are service braking means (for example, footbrake, and if so, to what extent at each braking process, service braking determining means 132).

The braking process determining means 130 further includes an auxiliary brake determining means 134 for determining whether or not auxiliary brakes are present and to what extent they are used in each braking process, if any.

The braking process determining means 130 further includes an engine brake determining means 136 for determining whether or not an engine brake is present and to what extent it is used, if any, in each braking process.

The system I further comprises a braking process decision receiving means 140 for receiving information on the evaluation of the braking processes.

The braking process decision receiving means 140 receives the braking process decision reception signal from the vehicle located in the instrument cluster of the vehicle in order to notify the driver of the evaluation of the current braking processes that the driver himself / And a display unit 142.

The break process decision receiving means 140 includes separate receiving units 144 for receiving and recording evaluations of driver behavior during the braking process. This may include receiving units at the haulier's premises to enable viewing of the results of evaluations of driver behavior during braking processes.

The electronic control 100 is signal-connected to the camera means 112 via the link 12 so that the electronic control 100 can send the object data (one (Including a speed limit information data from speed signs in a variant) from such means.

The electronic control 100 is signal-connected to the itinerary decision means 114 via the link 14. The electronic control 100 therefore determines the cause of the selected braking processes from the vehicle positioning means 114b And a signal indicating the routing data including the map data from the map information unit 114a can be received from these means.

The electronic control 100 is signal-connected to the avoiding motion recording means 116 via the link 16 so that the electronic control 100 can generate a signal indicative of avoiding motion data to determine the cause of the selected braking processes Can be received from such means.

The electronic control 100 is signal-connected to the spatial distance determination means 118 via the link 18. The electronic control 100 therefore determines the distance between the preceding vehicles A signal representing the data can be received from this means.

The electronic control 100 is signal-connected via the link 19 to the means for determining the road state characteristics 119, so that the electronic control 100 can receive a signal representative of the road state data from this means.

The electronic control 100 is signal-connected to the operating state determining means 120 via the link 20. Thus, the electronic control 100 can be configured to send a signal indicative of the state data, From the means.

The electronic control 100 is signal-connected to the traffic situation determining means 121 via the link 21, so that the electronic control 100 can receive a signal representing the traffic condition data from this means.

Since the electronic control 100 is signal-connected to the time determining means 123 via the link 23, the electronic control 100 therefore receives a signal indicative of the time data for the time at which the braking process occurred, And to determine whether the night driving conditions are prevailed by doing so.

The electronic control 100 is signal-connected to the weather determination means 125 via the link 25. The electronic control 100 therefore generates a signal indicative of weather data to determine the weather conditions prevailing at the time of the braking process Can be received from such means.

The electronic control 100 is signal-connected to the speed determining means 127 via the link 27 so that the electronic control 100 is able to determine the speed at which the vehicle was operated in the vicinity of the braking process, Signals can be received from these means.

The electronic control 100 is signaled to the road type determination means 129 via the link 29 so that the electronic control 100 receives a signal indicative of the type of road that was operating during the braking process from this means can do.

The electronic control 100 is signal-connected to the braking process determining means 130 via the link 30 so that the electronic control 100 determines the braking data relating to the type of braking means used during the braking process, Can be received from this means.

The electronic control 100 is signal-connected to the service break determining means via the link 32, so that the electronic control 100 is able to determine whether the service brake data From these means.

The electronic control 100 is signal-connected to the auxiliary brake determining means via the link 34, so that the electronic control 100 is able to generate a signal indicative of auxiliary brake data relating to how far the auxiliary brake means has been used during the braking process From these means.

The electronic control 100 is signal-connected to the engine brake determination means 136 via the link 36, so that the electronic control 100 determines whether the engine brake data relating to how much the engine brake means has been used during the braking process Can be received from this means.

The electronic control unit includes an itinerary including object data and / or speed limitations, terrain and any curves from the camera means (112) including data on the speed limit from the speed signs during the braking process to determine the cause of the braking The map data from the map information unit 114a of the determining means 114 and the brake data from the braking process determining means 130 so as to evaluate whether the selected braking process is an appropriate response to the determined cause .

In addition to the above-described processing, in one variation the electronic control unit 100 processes the avoidance motion data to assess whether the vehicle has performed an evasive motion during the braking process and / or determines the cause of the braking To process the road data for processing the interval data to determine the distance from any vehicles located in front of the process and / or for evaluating the road conditions prevailing during the braking process, along with the break data, This is to evaluate whether the braking process is an appropriate response to the determined cause.

In addition to the above-described processing, the electronic control unit 100 is configured to process the state data with the brake data in one variant to determine the conditions under which the vehicle was operating during the braking process, It is assessed whether it is an appropriate response to the cause. The state data includes, in one variant, traffic situation data, time data, weather data, velocity data and / or road type data.

The electronic control 100 is signal-connected to the braking process decision receiving means 140 via a link 40 which causes the link 40 to perform a braking operation on the results of driver actions A signal indicating the process decision data can be transmitted by this means.

The electronic control 100 is signal-connected to the vehicle display unit 142 via a link 42 which causes the link 42 to establish a braking process decision on the results of driver behavior in the braking process It is possible to cause a signal representing the data to be transmitted to this unit.

The electronic control 100 is signal-connected to a receiving unit 144 via a link 44 which causes the link 44 to provide the link 44 with the braking process decision data for the results of the driver behavior in the braking process Lt; RTI ID = 0.0 > a < / RTI >

3 is a schematic block diagram of a method for evaluating driver behavior during driving of a vehicle in accordance with an embodiment of the present invention.

In one embodiment, a method for evaluation of driver behavior during driving of vehicles includes a first step (S1) of continuously characterizing the driver's selected braking processes as a basis for evaluation.

In one embodiment, a method for evaluating driver behavior during driving of a vehicle includes a second step (S2) of continuously determining the cause of the selected braking process.

In one embodiment, a method for evaluating driver behavior during driving of a vehicle includes a third step (S3) of evaluating whether a selected braking process is an appropriate response to the determined cause.

4 is a diagram showing one version of the device. The control unit 100 described with reference to FIG. 2 may include the device 500 in one version. The device 500 includes a non-volatile memory 520, a data processing unit 510, and a read / write memory 550. The non-volatile memory has a first memory element 530 in which a computer program (e.g., an operating system) is stored to control the functionality of the device 500. The device 500 further includes a bus controller, a serial communication port, input / output means, an A / D converter, a time and date input and transmission unit, an event counter and an interruption controller (not shown) do. The non-volatile memory also has a second memory element 540.

The proposed computer program (P) includes routines for evaluating driver behavior during driving of the vehicle in accordance with an innovative method. The program P includes routines to continuously characterize the driver ' s selected braking processes as a basis for evaluation. It includes routines for determining the cause of the selected braking process. This includes routines for evaluating whether the selected braking process is an appropriate response to the cause for which it has been determined. The program P may be stored in executable or compressed form in memory 560 and / or read / write memory 550. [

When data processing unit 510 is described as performing a particular function, data processing unit 510 means performing a particular portion of the program stored in memory 560 or may be stored in read / write memory 550 Means performing a specific part of the program.

The data processing device 510 may communicate with the data port 599 via the data bus 515. Non-volatile memory 520 is intended to communicate with data processing unit 510 via data bus 512. A separate memory 560 is intended to communicate with the data processing unit via the data bus 511. The read / write memory 550 is configured to communicate with the data processing unit via the data bus 514. For example, the links associated with the control unit 100 may be connected to a data port.

When data is received on the data port 599, the data is temporarily stored in the second memory element 540. When the received input data is temporarily stored, the data processing unit 510 is ready to perform code execution as described above. Signals received on the data port may be used to continuously characterize the driver ' s selected braking processes by device 500 as a basis for evaluation. Signals received on the data port may be used by the device 500 to determine the cause of the selected braking process. Signals received on the data port may be used by the device 500 to evaluate whether the selected braking process is an appropriate response to the determined cause.

Some of the methods described herein may be performed by the device as a means of data processing unit 510 executing a program stored in memory 560 or read / write memory 550. [ When the device 500 executes the program, the method described herein is performed.

The foregoing description of the preferred embodiments of the present invention is presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments have been chosen and described in order to best explain the principles of the invention and its practical application and, accordingly, to enable those skilled in the art to understand the invention with various modifications as are suited to the different embodiments and for the purpose of use .

Claims (17)

CLAIMS 1. A method for evaluating driver behavior during driving of a vehicle,
Continuously characterizing the driver's selected braking process as a basis for the evaluation;
Determining (S2) a cause of the selected braking process; And
And evaluating whether the selected braking process is an appropriate response to the determined cause (S3). The method according to claim 1,
Characterized in that the braking process is characterized in terms of auxiliary brakes, service brakes and engine brakes. ≪ Desc / Clms Page number 13 > 3. The method according to claim 1 or 2,
Characterized in that said determining the cause comprises the use of camera means (112). 3. The method according to claim 1 or 2,
Wherein said determining the cause includes use of map data and vehicle location determination means 114b. ≪ Desc / Clms Page number 20 > 5. The method according to any one of claims 1 to 4,
Wherein said determining the cause includes the use of means (116) for recording evasive maneuvers. ≪ Desc / Clms Page number 19 > 6. The method according to any one of claims 1 to 5,
Further comprising the step of continuously determining conditions under which the vehicle is operating, the condition being considered in the evaluation. 6. The method according to any one of claims 1 to 5,
Wherein said determining the cause comprises the use of means (119) for determining road state characteristics. ≪ Desc / Clms Page number 17 > A system (I) for evaluating driver behavior during driving of a vehicle,
Means (100) for continuously characterizing the driver ' s selected braking process as a basis for the evaluation;
Means (100,110, 120,130) for determining the cause of the selected braking process; And
And means (100, 110, 120, 130) for evaluating whether the selected braking process is an appropriate response to the determined cause. 9. The method of claim 8,
Characterized in that the braking process is characterized in terms of an auxiliary brake, a service brake and an engine brake. 10. The method according to claim 8 or 9,
Characterized in that the means for determining the cause comprises camera means (112). 10. The method according to claim 8 or 9,
Characterized in that the means for determining the cause comprises a map information unit (114a) and a vehicle positioning means (114b). 12. The method according to any one of claims 8 to 11,
Characterized in that the means for determining the cause comprises means (116) for recording avoidance movements. 13. The method according to any one of claims 8 to 12,
Further comprising means (118) for continuously determining a state in which the vehicle is operating, the state being considered in the evaluation. 14. The method according to any one of claims 8 to 13,
Characterized in that the means for determining the cause comprises means (119) for determining a road state feature. A vehicle (1), characterized in that the vehicle (1) is provided with the system (I) according to any one of claims 8 to 14. A computer program (P) for evaluating driver behavior during operation of a vehicle, said program (P) comprising program code, said program code comprising an electronic control unit (100) When executed by another computer (500) connected to the unit (100), allows the electronic control unit (100) to perform the steps of any one of claims 1 to 7 A computer program for evaluating driver behavior. A computer program product, comprising: a computer program product comprising a digital storage medium, said digital storage medium storing a computer program according to claim 16;

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